Privacy is always BS until the lack of it bites you personally. Privacy (i.e. 4th amendment) is to Swiss what 2nd and 4th amendment is to conservative Americans: Our insurance against government overreach.
The problem is of course that not every place is as democratic (i.e. ruled by the people as a whole) and low in crime, therefore privacy creates unwanted side effects in form of illegitimate uses. What exactly is illegitimate is up for discussion though - e.g. I consider tax hiding as simply a symptom of governments failing to create stringent market places where taxes flow automatically and fairly. As long as you don't have a world- (solar system?) wide government with total control, you'll never eliminate the availability of tax havens, they just get shifted around - currently the easiest place to hide is probably Delaware.
I see cryptocurrency as a nice opportunity to introduce a much more stringent monetary system where it's trivial to trace back the origin of money and track whether it has been earned in a legitimate way, including the deduction of taxes. People will still have the same options in general:
(a) store it in a personal offline wallet - somewhat dangerous due to potential loss and/or forgetting access codes
(b) give access codes to a trusted bank who will have an interest in tracing whether everything is in order (due to regulations)
(c) store it somewhere off-shore, risking fraud
What crypto enables is basically a clean separation of (b) and (c), which would make life easier for Swiss banks in the current landscape, i.e. allow them to once again deal freely with foreign nationals, especially Americans.